18761343886 has 16 divisors (see below), whose sum is σ = 28602933840. Its totient is φ = 9227433600.

The previous prime is 18761343851. The next prime is 18761343893. The reversal of 18761343886 is 68834316781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5931 + ... + 193798.

It is an arithmetic number, because the mean of its divisors is an integer number (1787683365).

Almost surely, 2^18761343886 is an apocalyptic number.

18761343886 is a deficient number, since it is larger than the sum of its proper divisors (9841589954).

18761343886 is a wasteful number, since it uses less digits than its factorization.

18761343886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200499.

The product of its digits is 4644864, while the sum is 55.

The spelling of 18761343886 in words is "eighteen billion, seven hundred sixty-one million, three hundred forty-three thousand, eight hundred eighty-six".